What's the power difference of F.I cbe with/without f.i hfc?
 

Hi guys,

Advice pls. I've got fi bits on order but am considering cancelling my hfc-pipes because of what I've read about the drone/hiss issues.

I quite enjoy the car's dual personality where the sound is 'unintrusive' during normal driving with an increase in noise when drivin agressively, and I hope to retain a bareable interior volume.

My question is how much rwkw/rwhp will I actually lose with ONLY the cbe and also what's your opinion on whether the power difference would noticeable.

I was told by my tune-shop that my mate's (Bezzita) FI cbe and berk hfc dyno only showed a difference of 4rwkw between having a hfc and not.

I was under the impression that there would be a bigger difference.

Basically - Is the power gain from the hfc-pipes worth the drone/hiss/EPA issues for my daily driven car.

I'm 11 people away from completion (#137) and require your expert advice asap so I can advise Tony of changes or find a local buyer of the hfc-pipes I've ordered.

Thanks! :)

Hfc's as an addition to the CBE will be about 5 to 6 extra HP...

Here is the info that you seek...it has all the Dyno sheets with comparisions...

http://www.the370z.com/intake-exhaus...aust-here.html

Thanks guys! I'd read so much about fi in the past month that I'd forgotten that those details were there!

I need you to keep one thing in mind. The HFC's add about 5-6 PEAK horsepower. If you look at our dyno charts you will see a substantial gain throughout the low end and mid range. I can tell you it is quite noticeable when you are driving the car.

I can tell you that since you went with the (Resonated) high flow cats & (18") resonators within the X Pipe, you will minimize the hiss on deceleration. Under acceleration the hiss is not there.

Tony

Tony,

Just wondering off topic however linked, have you ever herd 12"res with Resonated HFC's?

No I have not, but if it was my car I would do the 18" with resonated HFC's.

Oh don't tell me that Tony, I ordered the 12" with HFCs lol. I'm sure I'll still like them though.

This is just my personal preference. You ordered a good setup and will be staified!...

Tony